Physics Kinetic and Static fricton problem

You need to move a 235 kg refrigerator away from the wall to clean behind it. The sliding μ is .375 and the static μ is .535. You can apply a force of 1250 N.
a) How much force will it take to move the refrigerator.
b) Once it is moving, how fast can you accelerate it.

Can someone please explain step by step I don't even know where to begin with this problem.